What are solid-state batteries?

Simply put, solid-state batteries use a solid electrolyte as opposed to the liquid or polymer gel one found in current lithium-ion batteries, and it can take the form of ceramics, glass, sulphites or solid polymers.

Solid electrolyte aside, solid-state batteries function much like those in lithium-ion batteries, in that they contain electrodes (cathodes and anodes) separated by an electrolyte that allows charged ions to pass through it. 

How do solid state batteries work?

Much the same way as a normal battery, if we’re honest. The flow of ions trigger a chemical reaction between the battery’s materials called ‘Redox’ where, when discharging power, oxidation occurs at the anode to create compounds with free electrons, which deliver electric energy, and reduction at the cathode which sees compounds gain electrons and thus store power. When a battery is charged the process is reversed.

Ilika plc (LON:IKA) is a pioneer in solid state battery technology enabling solutions for applications in Industrial IoT, MedTech, Electric Vehicles and Consumer Electronics.

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